{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T09:05:46.898","vulnerabilities":[{"cve":{"id":"CVE-2026-23041","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-02-04T16:16:19.563","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup\n\nWhen bnxt_init_one() fails during initialization (e.g.,\nbnxt_init_int_mode returns -ENODEV), the error path calls\nbnxt_free_hwrm_resources() which destroys the DMA pool and sets\nbp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called,\nwhich invokes ptp_clock_unregister().\n\nSince commit a60fc3294a37 (\"ptp: rework ptp_clock_unregister() to\ndisable events\"), ptp_clock_unregister() now calls\nptp_disable_all_events(), which in turn invokes the driver's .enable()\ncallback (bnxt_ptp_enable()) to disable PTP events before completing the\nunregistration.\n\nbnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin()\nand bnxt_ptp_cfg_event(), both of which call hwrm_req_init(). This\nfunction tries to allocate from bp->hwrm_dma_pool, causing a NULL\npointer dereference:\n\n  bnxt_en 0000:01:00.0 (unnamed net_device) (uninitialized): bnxt_init_int_mode err: ffffffed\n  KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n  Call Trace:\n   __hwrm_req_init (drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c:72)\n   bnxt_ptp_enable (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:323 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:517)\n   ptp_disable_all_events (drivers/ptp/ptp_chardev.c:66)\n   ptp_clock_unregister (drivers/ptp/ptp_clock.c:518)\n   bnxt_ptp_clear (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1134)\n   bnxt_init_one (drivers/net/ethernet/broadcom/bnxt/bnxt.c:16889)\n\nLines are against commit f8f9c1f4d0c7 (\"Linux 6.19-rc3\")\n\nFix this by clearing and unregistering ptp (bnxt_ptp_clear()) before\nfreeing HWRM resources."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbnxt_en: Corrección de un fallo por puntero NULL en bnxt_ptp_enable durante la limpieza de errores\n\nCuando bnxt_init_one() falla durante la inicialización (p. ej., bnxt_init_int_mode devuelve -ENODEV), la ruta de error llama a bnxt_free_hwrm_resources() que destruye el pool de DMA y establece bp->hwrm_dma_pool a NULL. Posteriormente, se llama a bnxt_ptp_clear(), que invoca a ptp_clock_unregister().\n\nDesde el commit a60fc3294a37 ('ptp: rework ptp_clock_unregister() to disable events'), ptp_clock_unregister() ahora llama a ptp_disable_all_events(), que a su vez invoca la función de callback .enable() del controlador (bnxt_ptp_enable()) para deshabilitar los eventos PTP antes de completar el desregistro.\n\nbnxt_ptp_enable() intenta enviar comandos HWRM a través de bnxt_ptp_cfg_pin() y bnxt_ptp_cfg_event(), ambas llaman a hwrm_req_init(). Esta función intenta asignar memoria de bp->hwrm_dma_pool, causando una desreferencia de puntero NULL:\n\n  bnxt_en 0000:01:00.0 (net_device sin nombre) (no inicializado): bnxt_init_int_mode err: ffffffed\n  KASAN: desreferencia de puntero nulo en el rango [0x0000000000000028-0x000000000000002f]\n  Traza de Llamadas:\n   __hwrm_req_init (drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c:72)\n   bnxt_ptp_enable (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:323 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:517)\n   ptp_disable_all_events (drivers/ptp/ptp_chardev.c:66)\n   ptp_clock_unregister (drivers/ptp/ptp_clock.c:518)\n   bnxt_ptp_clear (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1134)\n   bnxt_init_one (drivers/net/ethernet/broadcom/bnxt/bnxt.c:16889)\n\nLas líneas son contra el commit f8f9c1f4d0c7 ('Linux 6.19-rc3')\n\nSolucione esto limpiando y desregistrando ptp (bnxt_ptp_clear()) antes de liberar los recursos HWRM."}],"metrics":{},"references":[{"url":"https://git.kernel.org/stable/c/0174d5466caefc22f03a36c43b2a3cce7e332627","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3358995b1a7f9dcb52a56ec8251570d71024dad0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}